diff --git a/toolchain/uClibc/uClibc-0.9.29-001-fix-mmap.patch b/toolchain/uClibc/uClibc-0.9.29-001-fix-mmap.patch
index af38be3097..4775e8c332 100644
--- a/toolchain/uClibc/uClibc-0.9.29-001-fix-mmap.patch
+++ b/toolchain/uClibc/uClibc-0.9.29-001-fix-mmap.patch
@@ -84,7 +84,7 @@
 +                         fd,((__u_quad_t)offset >> MMAP2_PAGE_SHIFT));
 +#else
 +   return __syscall_mmap2(addr, len, prot, flags,
-+                          fd,((__ulong_t)offset >> MMAP2_PAGE_SHIFT));
++                          fd,((__u_long)offset >> MMAP2_PAGE_SHIFT));
 +#endif
  }